Home / 13,521.68-18,659.50-7,553.32

Finding the Fourth Proportional to 13,521.68, 18,659.50 and 7,553.32

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Solution

The fourth proportional to 13,521.68, 18,659.50 and 7,553.32 is: 10,423.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.68 : 18,659.50 = 7,553.32 : x
  2. Step 2: Convert to fraction form
    13,521.68/18,659.50 = 7,553.32/x
  3. Step 3: Cross multiply
    13,521.68x = 18,659.50 × 7,553.32
  4. Step 4: Simplify right side
    13,521.68x = 140,941,174.54
  5. Step 5: Solve for x
    x = 140,941,174.54/13,521.68
  6. Step 6: Final answer
    x = 10,423.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.